local debug = false
if not WeakAurasSaved then WeakAurasSaved = {} end
if not WeakAurasSaved.Cyka then WeakAurasSaved.Cyka = {} end
if not WeakAurasSaved.Cyka.ItemCache then WeakAurasSaved.Cyka.ItemCache = {} end

---@param slot number
---@return string
local function getItemLink(slot)
    if slot == nil then return "" end
    return GetLootSlotLink(slot)
end
---@param slot number
---@return string
local function getItemName(slot)
    if slot == nil then return "" end
    return select(2, GetLootSlotInfo(slot))
end
---@param slot number
---@return string
local function getItemType(slot)
    if slot == nil then return "" end
    local itemLink = getItemLink(slot)
    return select(6, GetItemInfo(itemLink))
end
---@param slot number
---@return string
local function getItemSubtype(slot)
    if slot == nil then return "" end
    local itemLink = getItemLink(slot)
    return select(7, GetItemInfo(itemLink))
end
---@param slot number
---@return number
local function getItemLevel(slot)
    if slot == nil then return 0 end
    local itemLink = getItemLink(slot)
    return select(4, GetItemInfo(itemLink))
end
---The vendor price in copper, or 0 for items that cannot be sold
---@param slot number
---@return number
local function getItemValue(slot)
    if slot == nil then return 0 end
    local itemLink = getItemLink(slot)
    return select(11, GetItemInfo(itemLink))
end
---@param slot number
---@return number
local function getItemQuantity(slot)
    if slot == nil then return 0 end
    return select(3, GetLootSlotInfo(slot))
end
---@param slot number
---@return Enum.ItemQuality
local function getItemQuality(slot)
    if slot == nil then return Enum.ItemQuality.Poor end
    local itemLink = getItemLink(slot)
    return select(3, GetItemInfo(itemLink))
end
---@param slot number
---@return string
local function getItemEquipLocation(slot)
    if slot == nil then return "" end
    local itemLink = getItemLink(slot)
    return select(9, GetItemInfo(itemLink))
end
---@param slot number
---@return number
local function getItemIcon(slot)
    if slot == nil then return 0 end
    local itemLink = getItemLink(slot)
    return select(10, GetItemInfo(itemLink))
end
---@param slot number
---@return number
local function getBindType(slot)
    if slot == nil then return 0 end
    local itemLink = getItemLink(slot)
    return select(14, GetItemInfo(itemLink))
end


---@param slot number
---@return nil
local doLoot = function(slot)
    LootSlot(slot)

    local itemIcon = getItemIcon(slot) or 134400
    local itemName = getItemName(slot) or "Unknown"
    itemName = itemName:gsub("\n", ", ")
    local itemQuality = getItemQuality(slot) or 0

    if not WeakAurasSaved.Cyka.ItemCache[itemName] then
        WeakAurasSaved.Cyka.ItemCache[itemName] = {
            icon = itemIcon,
            quality = itemQuality,
        }
    end
end

---@class Filter
---@field enabled boolean
---@field requires table<string, fun(slot: number): string|number|boolean> | nil
---@field filter fun(slot: number, provided: table<string, string|number|boolean>): boolean
Filter = {
    ---@param enabled boolean
    ---@param requires table<string, fun(slot: number): string|number|boolean> | nil
    ---@param filter fun(slot: number, provided: table<string, string|number|boolean>): boolean
    ---@return Filter
    new = function(enabled, requires, filter)
        local self = setmetatable({}, {
            __index = Filter
        })
        self.enabled = enabled
        self.requires = requires
        self.filter = filter
        return self
    end,

    ---@param self Filter
    ---@param slot number
    ---@return boolean
    Run = function(self, slot)
        ---@type table<string, string|number|boolean>
        local provided = {}
        if self.requires then
            for k, v in pairs(self.requires) do
                provided[k] = v(slot)
            end
        end
        return self.filter(slot, provided)
    end
}

local goldFilter = Filter.new(true,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if string.find(provided.name, "Gold") or
            string.find(provided.name, "Silver") or
            string.find(provided.name, "Copper") then
            return true
        end
        return false
    end)
local orderResourcesFilter = Filter.new(true,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if string.find(provided.name, "Order Resources") then
            return true
        end
        return false
    end)
local mountFilter = Filter.new(true,
    { ["type"] = getItemType },
    function(slot, provided)
        ---@cast provided { type: string }
        if provided.type == "Mount" then
            return true
        end
        return false
    end)
local ilvlFilter = Filter.new(true,
    { ["ilvl"] = getItemLevel },
    function(slot, provided)
        ---@cast provided { ilvl: number }
        if provided.ilvl and provided.ilvl > 800 then
            return true
        end
        return false
    end)
local professionFilter = Filter.new(true,
    {
        ["type"] = getItemType,
        ["subtype"] = getItemSubtype
    },
    function(slot, provided)
        ---@cast provided { type: string, subtype: string }

        local enabled = {
            ["Herb"] = true,
            ["Leather"] = true,
            ["Cloth"] = true,
            ["Ore"] = false,
            ["Cooking"] = true,
            ["Inscription"] = true,
            ["Enchanting"] = true,
        }

        if provided.type == "Tradeskill" then
            if enabled[provided.subtype] then
                return true
            end
        end
        return false
    end)
local valueFilter = Filter.new(true,
    {
        ["value"] = getItemValue,
        ["quantity"] = getItemQuality
    },
    function(slot, provided)
        ---@cast provided { value: number, quantity: number }

        local valueThreshold = 35 * 100 * 100
        local applyValueTostack = false

        local value = provided.value
        if applyValueTostack then value = value * provided.quantity end

        if value > valueThreshold then
            return true
        end
        return false
    end)
local greyValueFilter = Filter.new(true,
    {
        ["quality"] = getItemQuality,
        ["value"] = getItemValue,
        ["quantity"] = getItemQuantity
    },
    function(slot, provided)
        ---@cast provided { quality: number, value: number, quantity: number }

        local valueThreshold = 4 * 100 * 100
        local applyValueTostack = false

        if provided.quality == 0 then
            local value = provided.value
            if applyValueTostack then value = value * provided.quantity end

            if value > valueThreshold then
                return true
            end
        end
        return false
    end)
local questItemFilter = Filter.new(true,
    {
        ["type"] = getItemType,
        ["subtype"] = getItemSubtype
    },
    function(slot, provided)
        ---@cast provided { type: string, subtype: string }
        if provided.type == "Quest" and provided.subtype == "Quest" then
            return true
        end
        return false
    end)
local classGearFilter = Filter.new(true,
    {
        ["ilvl"] = getItemLevel,
        ["quality"] = getItemQuality,
        ["type"] = getItemType,
        ["subtype"] = getItemSubtype,
        ["equiploc"] = getItemEquipLocation
    },
    function(slot, provided)
        ---@cast provided { ilvl: number, quality: number, type: string, subtype: string, equiploc: string }

        local ilvlThreshold = 800
        local qualityThreshold = 2

        local isEquippable = aura_env.skills[select(3, UnitClass("player"))][provided.subtype] == 1

        if isEquippable and provided.ilvl > ilvlThreshold and provided.quality > qualityThreshold then
            return true
        end
        return false
    end)
local arguniteFilter = Filter.new(true,
    {
        ["name"] = getItemName,
        ["quality"] = getItemQuality
    },
    function(slot, provided)
        ---@cast provided { name: string, quality: number }
        if string.find(provided.name, "Argunite") and provided.quality > 1 then
            return true
        end
        return false
    end)
local ancientManaFilter = Filter.new(true,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if string.find(provided.name, "Ancient Mana") then
            return true
        end
        return false
    end)
local reicpeFilter = Filter.new(false,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if string.find(provided.name, "Recipe") or string.find(provided.name, "Technique") then
            return true
        end
        return false
    end)
local bloodOfSargerasFilter = Filter.new(true,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if provided.name == "Blood of Sargeras" then
            return true
        end
        return false
    end)
local bloodhunerQuarryFilter = Filter.new(true,
    { ["name"] = getItemName },
    function(slot, provided)
        ---@cast provided { name: string }
        if provided.name == "Bloodhunter's Quarry" then
            return true
        end
        return false
    end)
local boeFilter = Filter.new(true,
    {
        ["ilvl"] = getItemLevel,
        ["type"] = getItemType,
        ["quality"] = getItemQuality,
        ["equiploc"] = getItemEquipLocation,
        ["bindtype"] = getBindType
    },
    function(slot, provided)
        ---@cast provided { ilvl: number, type: string, quality: number, equiploc: string, bindtype: number }

        local ilvlThreshold = 800
        local qualityThreshold = 1

        local itemType = provided.type
        local itemEquipLoc = provided.equiploc
        if (itemType == "Armor"
                or itemType == "Weapon"
                or itemEquipLoc == "INVTYPE_FINGER"
                or itemEquipLoc == "INVTYPE_TRINKET"
                or itemEquipLoc == "INVTYPE_CLOAK"
                or itemEquipLoc == "INVTYPE_NECK") then
            local itemLevel = provided.ilvl
            local itemQuality = provided.quality
            local bindType = provided.bindtype

            if itemLevel > ilvlThreshold and itemQuality > qualityThreshold and bindType == 1 then
                return true
            end
        end
        return false
    end)

-- local azeriteFilter = {
--     enabled = true,
--     ilvlThreshold = 800,
--     qualityThreshold = 2,
--     filter = function(self, slot)
--         if self.enabled the
--             local itemType = getItemType(slot)
--             local itemSubtype = getItemSubtype(slot)
--             local itemQuality = getItemQuality(slot)
--             if itemType and itemSubtype and itemQuality and itemType == "Consumable" and itemSubtype == "Other" and itemQuality > 1 the
--                 return true
--             en
--                 tostring(itemType) .. " " .. tostring(itemSubtype) .. " " .. tostring(itemQuality))
--         end
--     end
-- }


---@type table<Filter>
local filters = {
    goldFilter,
    orderResourcesFilter,
    mountFilter,
    ilvlFilter,
    professionFilter,
    valueFilter,
    greyValueFilter,
    questItemFilter,
    classGearFilter,
    arguniteFilter,
    ancientManaFilter,
    reicpeFilter,
    bloodOfSargerasFilter,
    boeFilter,
    bloodhunerQuarryFilter,
}

---@class FilterService
aura_env.FilterService = {
    ---@param lootInfo table<number>
    Run = function(lootInfo)
        ---@type table<number>
        local slotsToLoot = {}
        for slot, item in pairs(lootInfo) do
            for _, filter in pairs(filters) do
                if filter:Run(slot) then
                    slotsToLoot[#slotsToLoot + 1] = slot
                    break
                end
            end
        end

        aura_env.FilterService.doLoot(slotsToLoot)
    end,

    doLoot = function(slots)
        for i = #slots, 1, -1 do
            doLoot(slots[i])
        end
    end
}

aura_env.skills = {
    --Warrior
    [1] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 1,
        ["Shields"] = 1,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 1,
        ["Bows"] = 1,
        ["Guns"] = 1,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 1,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 1,
        ["Warglaives"] = 1,
        ["Staves"] = 1,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 1,
        ["Crossbows"] = 1,
        ["Wands"] = 0,
    },
    --Paladin
    [2] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 1,
        ["Shields"] = 1,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 1,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 1,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 1,
        ["Warglaives"] = 0,
        ["Staves"] = 0,
        ["Fist Weapons"] = 0,
        ["Daggers"] = 0,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Hunter
    [3] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 0,
        ["Mail"] = 1,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 1,
        ["Bows"] = 1,
        ["Guns"] = 1,
        ["One-Handed Maces"] = 0,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 1,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 1,
        ["Crossbows"] = 1,
        ["Wands"] = 0,
    },
    --Rogue
    [4] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 1,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 0,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Priest
    [5] = {
        --Armor Skills
        ["Cloth"] = 1,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 0,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 0,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 0,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 1,
    },
    --Death Knight
    [6] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 1,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 1,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 1,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 1,
        ["Warglaives"] = 0,
        ["Staves"] = 0,
        ["Fist Weapons"] = 0,
        ["Daggers"] = 0,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Shaman
    [7] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 0,
        ["Mail"] = 1,
        ["Plate"] = 0,
        ["Shields"] = 1,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 0,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Mage
    [8] = {
        --Armor Skills
        ["Cloth"] = 1,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 0,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 0,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 0,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 1,
    },
    --Warlock
    [9] = {
        --Armor Skills
        ["Cloth"] = 1,
        ["Leather"] = 0,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 0,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 0,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 0,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 1,
    },
    --Monk
    [10] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 1,
        ["Mail"] = 0,
        ["Plate"] = 1,
        ["Shields"] = 1,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 0,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Druid
    [11] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 1,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 0,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 1,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 1,
        ["One-Handed Swords"] = 0,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 0,
        ["Staves"] = 1,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 1,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
    --Demon Hunter
    [12] = {
        --Armor Skills
        ["Cloth"] = 0,
        ["Leather"] = 1,
        ["Mail"] = 0,
        ["Plate"] = 0,
        ["Shields"] = 0,
        --Weapon Skills
        ["One-Handed Axes"] = 1,
        ["Two-Handed Axes"] = 0,
        ["Bows"] = 0,
        ["Guns"] = 0,
        ["One-Handed Maces"] = 0,
        ["Two-Handed Maces"] = 0,
        ["Polearms"] = 0,
        ["One-Handed Swords"] = 1,
        ["Two-Handed Swords"] = 0,
        ["Warglaives"] = 1,
        ["Staves"] = 0,
        ["Fist Weapons"] = 1,
        ["Daggers"] = 0,
        ["Crossbows"] = 0,
        ["Wands"] = 0,
    },
}
aura_env.qualityColors = {
    "\124cff9d9d9d", -- Poor
    "\124cffffffff", -- Common
    "\124cff1eff00", -- Uncommon
    "\124cff0070dd", -- Rare
    "\124cffa335ee", -- Epic
    "\124cffff8000", -- Legendary
    "\124cffe6cc80", -- Artifact
    "\124cff00ccff", -- Heirloom
}